No matter amount of Bitcoin mining reward, the short answer is always ASIC with best efficiency in terms of J/TH and good price/hashrate ratio.
I don’t think it is as simple as this.
Customers need to have a decent customer service/support if something goes wrong with the hardware and I don’t think there are many reputable brands around that provide it. Canaan used to be quite big I don’t know if they are still in business but Bitmain is pretty much the golden standard of crypto miners.
So instead of choosing a brand you never heard of before, OP you should go with a miner from Bitmain’s lineup imo. (Unless you are feeling adventurous)
You're right, that's why i did mention "short answer". For serious miner, there are so many factors that could be mentioned such as warranty and spare part availability. Although FWIW
currently shows only some AntMiner S21 variants have very good efficiency.